RE: Bashing of the Kadet Seniors
If you go with stock decaledge (wing, stab incidence, thrustlines) and I reccomend you do for relatively simple bashes such as you want to do then I highly reccomend you also use the design down and right thrust.
The only exception I would make to this in my opinion is when you are substancially raising the thrustlines such as the case when bashing to a wing mounted engines for a multi.
The perfect size engines for a SC kit or arf is a 61 two stroke or a 91 Fourstroke such as the magnum.
These are the sizes I have always recommended for that airplane even for training when bashing was not the goal.
A mild 91FS is perfect for that airplane bit remember using the long props of the FS's it will be even more important that you maintain stock down as well as side thrust. This is especially so when some of your goals are to maintain a relatively wide speed range from low to higher.
John